Evolution of a migrating giant planet in the presence of an inclined binary companion

Roisin, Arnaud; Libert, Anne-Sophie

doi:10.1051/0004-6361/202038880

Cited by 3 publications

(9 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the contrary, the GP prevents the planet to be locked into the Lidov-Kozai resonance during the disk phase. This example clearly shows that GP is the dominant effect acting on the dynamics of a migrating planet when compared to the nodal precession, as previously envisioned in the discussion of Roisin & Libert (2021).…”

Section: Typical Examplesupporting

confidence: 70%

“…In Roisin & Libert (2021), we studied the influence of a wide binary companion on the evolution of a migrating giant Stype planet embedded in a protoplanetary disk. In the present work, we focus on two additional effects that were neglected in Roisin & Libert (2021), namely the disk gravitational potential acting on the giant planet and the nodal precession induced by the binary companion on the disk.…”

Section: Code Overview and Numerical Methodsmentioning

confidence: 99%

“…The study is carried out with the symplectic N -body code adapted for migrating planets in binary star systems and presented in Roisin & Libert (2021) to which we refer for more details. The code consists in a modification of the wellknown SyMBA integrator (Duncan et al 1998) in order to include an outer binary companion by following Chambers et al (2002).…”

Section: N -Body Code For Migrating Planets In Binariesmentioning

confidence: 99%

“…In this section, we study the influence of the two additional effects described in the previous section, namely the disk gravitational potential (hereafter, GP) and the disk nodal precession caused by a binary companion (hereafter, NP), on the evolution of a migrating giant planet in a S-type binary system. This work pursues the study of Roisin & Libert (2021), where such effects were not considered.…”

Section: Simulationsmentioning

confidence: 99%

“…In a previous study (Roisin & Libert 2021), we discussed the influence of a wide binary companion on the evolution of a giant planet migrating in the disk. This work was con-ducted using a symplectic N -body integrator adapted for binary star systems, in which the dissipation due to the migration in the disk was modelled by appropriate formulae fitted from hydrodynamical simulations by Bitsch et al (2013).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Planetary migration in precessing disks for S-type wide binaries

Roisin,

Teyssandier,

Libert

2021

Preprint

View full text Add to dashboard Cite

The discovery of numerous circumprimary planets in the last few years has brought to the fore the question of planet formation in binary systems. The significant dynamical influence, during the protoplanetary disk phase, of a binary companion on a giant planet has previously been highlighted for wide binary stars. In particular, highly inclined binary companion can induce perturbations on the disk and the planets, through the Lidov-Kozai resonance, which could inhibit the formation process. In this work, we aim to study how the disk gravitational potential acting on the planet and the nodal precession induced by the wide binary companion with separation of 1000 AU on the disk act to suppress the Lidov-Kozai perturbations on a migrating giant planet. We derive new approximate formulas for the evolution of the disk's inclination and longitude of the ascending node, in the case of a rigidly precessing disk with a decreasing mass and perturbed by a wide binary companion, which are suitable for N -body simulations. We carry out 3200 simulations with several eccentricity and inclination values for the binary companion. The gravitational and damping forces exerted by the disk on the planet tend to keep the latter in the midplane of the former, and suppress the effect of the binary companion by preventing the planet from getting locked in the Lidov-Kozai resonance during the disk phase. We also confirm that because of nodal precession induced by the binary, a primordial spin-orbit misalignment could be generated for circumprimary planets with an inclined binary companion.

show abstract

Section: Typical Examplesupporting

confidence: 70%

Section: Code Overview and Numerical Methodsmentioning

confidence: 99%

Section: N -Body Code For Migrating Planets In Binariesmentioning

confidence: 99%

Section: Simulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Planetary migration in precessing disks for S-type wide binaries

Roisin,

Teyssandier,

Libert

2021

Preprint

View full text Add to dashboard Cite

show abstract

Resonance capture and long-term evolution of planets in binary star systems

Roisin

Doukhanin

Teyssandier

et al. 2022

A&A

Self Cite

View full text Add to dashboard Cite

Aims. The growing population of planets discovered in orbit around one stellar component of a binary star raises the question of the influence of the binary companion on the formation process of planetary systems. The aim of this work is to study the impact of a binary companion on the evolution of two-planet systems during both the type-II migration phase and their long-term evolution after the dissipation of the protoplanetary disk. Methods. We used the symplectic integrator SyMBA, modified to include a wide binary companion. We also included the Type-II migration of giant planets during the protoplanetary disk phase with suitable eccentricity and inclination damping as well as the gravitational potential acting on the planets due to the disk and the nodal precession of the disk induced by the binary companion. We considered various inclinations, eccentricities, and separations of the binary companion. Results. Disk migration allows for the formation of planet pairs in mean-motion resonances despite the presence of the binary companion. When the binary separation is wide (1000 au), the timescale of the perturbations that it raises on the planets is longer than the disk's lifetime and resonant pairs are routinely formed in the 2:1, 5:2, and 3:1 commensurabilities. Provided the planet-planet interaction timescale is smaller than the timescale of binary perturbations, these systems can remain in resonance long after the disk has dissipated. When the binary separation is smaller (250 au), only planets in the 2:1 resonance tend to remain in a resonant state and more chaotic evolutions are observed, as well as more ejections. After those ejections, the remaining planet can become eccentric due to the perturbations from the binary companion in addition, for strongly inclined binary companions, captures in the von Ziepel-Lidov-Kozai resonance can occur. Whereas in systems with two planets, this mechanism is quenched by planet-planet interactions. Our simulations reveal that the interplay between planet-disk, planet-planet, and planet-binary interactions can lead to the formation of resonant pairs of planets which remain stable over timescales much longer than the disk's lifetime.

show abstract

Planetary migration in precessing discs for S-type wide binaries

Roisin

Teyssandier

Libert

2021

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

The discovery of numerous circumprimary planets in the last few years has brought to the fore the question of planet formation in binary systems. The significant dynamical influence, during the protoplanetary disk phase, of a binary companion on a giant planet has previously been highlighted for wide binary stars. In particular, highly inclined binary companion can induce perturbations on the disk and the planets, through the Lidov-Kozai resonance, which could inhibit the formation process. In this work, we aim to study how the disk gravitational potential acting on the planet and the nodal precession induced by the wide binary companion with separation of 1000 AU on the disk act to suppress the Lidov-Kozai perturbations on a migrating giant planet. We derive new approximate formulas for the evolution of the disk’s inclination and longitude of the ascending node, in the case of a rigidly precessing disk with a decreasing mass and perturbed by a wide binary companion, which are suitable for N-body simulations. We carry out 3200 simulations with several eccentricity and inclination values for the binary companion. The gravitational and damping forces exerted by the disk on the planet tend to keep the latter in the midplane of the former, and suppress the effect of the binary companion by preventing the planet from getting locked in the Lidov-Kozai resonance during the disk phase. We also confirm that because of nodal precession induced by the binary, a primordial spin-orbit misalignment could be generated for circumprimary planets with an inclined binary companion.

show abstract

Evolution of a migrating giant planet in the presence of an inclined binary companion

Cited by 3 publications

References 50 publications

Planetary migration in precessing disks for S-type wide binaries

Planetary migration in precessing disks for S-type wide binaries

Resonance capture and long-term evolution of planets in binary star systems

Planetary migration in precessing discs for S-type wide binaries

Contact Info

Product

Resources

About